oa.rf.individualEquation = new RenderingForm(
  "individualEquation",
  "Renders an equation with an arithmetic term on the left hand side and its evaluation result on the right hand side.",
  RenderingModeEL.individually
);
oa.rf.individualEquation.isApplicableTo = function( apt) {
  return (
      apt instanceof ArithmeticProblemType && 
        (apt.numberType === NumberTypeEL.NonNegativeInteger || 
         apt.numberType === NumberTypeEL.Integer ||
         apt.numberType === NumberTypeEL.Decimal)
  );
};
